Based on the memoirs of Molly Lefebure (secretary to Britain's Home Office pathologist), this 2013 PBS Masterpiece Mystery! two-parter focuses on the nascent field of forensic science. Set in 1940 during the London Blitz, it explores a world where people live life in the moment—and where criminals can use blackouts for nefarious ends.

"Patrick Kennedy... plays an eager young pathologist named Lennox Collins who tries the patience of the police. Throwing around modern jargon like hesitation marks and luminol, he keeps finding evidence that suggests that the cops' chief suspect in a series of murders, a nervous young man with a German surname, is probably innocent.... Opposite the brilliant but socially inept Collins is the intrepid Molly Cooper, played by Tamzin Merchant ('The Tudors') with an ingratiating edge."—NYTimes

"Episode one was compelling and beautifully shot—some scenes seemed almost sepia-toned—and a gripping account of primitive DNA profiling.... Scriptwriter David Kane ensured authenticity by showing his work to Lefebure shortly before she died.... Her voice was ever-present in Fennell's character—some of her brassiest lines ('Give me a clean prostitute over a dirty housewife any day!') were taken straight from Lefebure's book, Evidence for the Crown."—The Telegraph